William Comyn may refer to: William Cumin, or Comyn, medieval bishop of Durham elect, and Lord Chancellor of Scotland William Comyn, Lord of Badenoch (1163–1233) William Comyns Beaumont (1873–1956), British journalist, author and lecturer William Leslie Comyn (1877–?), Californian businessman and shipbuilder William Comyn, Lord of Kilbride (died 1283), sheriff of Ayr in 1263 See also William Cumin (disambiguation)